Loss of performance since 7.8 - 8.5 upgrade

[danielanthony]

Hi,

I upgraded my Intel Matrix drivers from 7.8 to 8.5 and have got a drop in performance, see originally:






Now with the 8.5 Matrix Storage drivers:





Any idea's what is going on?

 

[danielanthony]

Write-back cache is set to enabled on both volumes.

I literally ran HD Tune to baseline the volumes, installed the new driver, rebooted, and ran again.

Wish I hadn't bothered!

 

[danielanthony]

The access time on the RAID0 volume has gone up from 0.1ms to 3.4ms.

The burst rate on the RAID5 volume has gone down from 1541mb/s to 1253mb/s.